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H. C. MORTON.

GRATE BAR.

APPLICAIION FILED APR. 4. 1919.

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ZF'IGJOr :gm' W J5 -FlG l2 J5 Z WITNESSE ROBERT C. MORTON, OF BALTIMORE,MARYLAND.

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Specification of Letters Patent.

Patented Sept. 2, 1919.

Application filed April 4, 1919. Serial No. 287,470.

To all whom it may concern:

Be it known that I, ROBERT C. MORTON, of the city of Baltimore, in theState of Maryland, have invented a certain new and useful Improvement inGrate-Bars, of which improvementmthe following is a specification.

My invention relates to means for supporting fuel in combustion inlocomotive boiler ing an embodiment'bf my invention; Fig. 2,

a side view, in elevation, of the same; Fig. 3, an end view, as seenfrom the left- Fig. 4, a vertical transverse section, on the ine m a: ofFig. 2; Fig. 5, a. similar section on the line y 3 of Fig. 1; Fig. 6, aplan view of one end of the cradle member, showing a trunnion thereon;Fig. 7, an end view of the same; Fig. 8, a similar view illustrating astructural modification; Fig. 9, a lan view of one end of the cradlemember, il ustrating another structural modification; Fig. 10, a sideview of the same- Fig. 11, a view, half in end elevation, and half insection, on the line 2 z of Fig. 10; and, Fig. 12, an end view of one ofthe bar members of Figs. 9 to 11, inclusive.

In the practice of my invention, referring descriptively to the specificembodiment thereof which is herein exemplified, I provide a carryingmember or cradle, indicated,

I as a whole, by A, and detachable and adjustable fuel supporting barmembers, each indicated, as a whole, by B, which are fitted, at theirends, in the carr ing member, in. such manner as to be readllyinsertible and removable therein and therefrom, and adjusted to presentdifferent fuel supporting surfaces. The cradle comprises two end barcarrying sections, 1, 1, in which are formed draft passages, 1", and across tie, 1", preferably of inverted T section, extendin downwardlfrom, and connecting, the en sections. he cradle may be, as indicatedars may, by l in the drawings, an integral casting, or, if

preferred, the end portions may be made of 7 past steel, and welded to awrought iron cross The cradle may be supported in the furnacejn anysuitable known manner. Thus, 1n Figs. 1 to 3, inclusive, and 9 to 11,inclusive, sockets, 1, are shown as formed in the end sections, toreceive corresponding pins, or trunnions, on hearing bars in thefurnace; Figs. 6 and 7, show, as equivalents trunnions, 1, on the endsections, adapted to fit in sockets on hearing bars; and Fig. 8, showsan open bottomed inverted U shaped recess, 1, on an end section adaptedto fit over a trunnion on a bearing bar, the cradle being held inposition thereon by a pin, 1, at the bottom of the socket. A rocker arm,1 extends downwardl from one of the end sec tions of the crad e, or fromany other convenient position thereon, and is adapted to be connected toany of the ordinary means for rocking a grate bar manually or by theapplication of power.

he cradle, A, supports, and carries with it, when rocked in itsbearings, two counterpart fuel supporting bar members, B, B, which, asmost clearly shown in Figs. 4: and .12, are cast metal bars, eachcomprising two plates, united at a right angle, so as to make the bar ofsubstantially inverted L- transverse section, which bar members arefitted detachably in the end sections of the cradle. The connection ofthe bar members and the cradle is effected by inclined tongues ortenons, 2, on the ends of the bar members, which engage correspondingrecesses in the end sections of the cradle, as most clearly shown inFig. 5. A plurality of transverse air passages, 2, is formed 1n each ofthe plates of the bars, which are fitted side by side in the cradle, thefaces of their upper plates forming the supporting surfaces for thefuel, in the manner of grate bars of the table or box type. It will beobvious that if the draft passages were extended to, and open at, theouter edges of the plates, the latter would be in the form of theordinary fin er grates.

.he two plates forming each fuel supporting bar member, B, bein asbefore stated, counterparts, these mem is may be fitted in the cradle,with either of their lates 'disposed horizontallg to form a fue support,and, when the t en horizontal plate of a bar is burned or damaged tosuch an extent asto be considered unfit for service, the bar can bedetached from the cradle, turned through an angle of ninety degrees, andreplaced in the cradle, with the other plate in horizontal position, toform a. fuel support. The increase in the service life of the bar by thecapacity of thus providing for the substitution of a new and unused fuelsupporting surface for one which has become deteriorated orunserviceable, effects a substantial economy, as will be obvious tothose familiar with the operation of locomotive boiler fireboxes andother furnaces in which a comparatively high degree of heat ismaintained in operation. It will also be seen that the bar members may,when desired, be reversed or turned end for end, in the cradle.

Figs. 9 to 12, inclusive, illustrate a modification of structuraldetail, in which the connection of the bar members to the cradle iseffected by means of separated projections, 52", disposed in rows atright angles on the ends of the bar members, and adapted to engagevertical passages, 1, in the end sections of the cradle. The engagementand disengagement of the bar members and cradle are efiected in the samemanner as by the means first described.

I claim as my invention and desire to secure by Letters Patent:

'1. In an appliancefor supporting fuel in furnaces, the combination ofa. carrying member,s-and a fuel supporting bar member having a pluralityof relatively angularly disposed fuel supportin surfaces and beingfitted detachably and a justably in the carryin member.

2. ii an appliance for supporting fuel in furnaces, the combination of acarrying member; a fuel supporting member having a plurality. ofrelatively angularly dis posed fuel supporting surfaces; and means foradjusting said fuel supporting member in the carrylng member in positionto present either of its fuel supporting surfaces at top.

3. In an appliance for supporting fuel in furnaces, the combination of acarrying member, and two counterpart fuel supportnecting said barmember'to the cradle with eitherof its plates in position to present afuel supporting surface .at top.

. 5. In an appliance for supporting fuel in furnaces, the combination ofa cradlecomprising two end sections connected by a downwardly dependingcross tie; means for connecting said cradle to a rockingmechanism; a barmember fitted detachiably in the cradle between the end sectionsthereof, and

comprising two plates perforated'by air passages and connected atsubstantially a right angle; and correspondingly located tongues orprojections on-the plates of the bar member, each adapted to engage apassage in the cradle.

6. In an appliance for supporting fuel in furnaces, a fuel supportingbar member com prising in an integral structure, two plates, connectedat substantially a right angle, each plate being perforated by aplurality of air passages, and end projections adapted to detachalyengage a carrying member.

ROBERT C. MORTON.

Witnesses: I

A. G. SANDMAN,

H. T. DALY, Jr.

